1230520 has 16 divisors (see below), whose sum is σ = 2768760. Its totient is φ = 492192.

The previous prime is 1230491. The next prime is 1230521. The reversal of 1230520 is 250321.

It is a self number, because there is not a number n which added to its sum of digits gives 1230520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1230521) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15342 + ... + 15421.

2^1230520 is an apocalyptic number.

1230520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1230520 is an abundant number, since it is smaller than the sum of its proper divisors (1538240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1230520 is a wasteful number, since it uses less digits than its factorization.

1230520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30774 (or 30770 counting only the distinct ones).

The product of its (nonzero) digits is 60, while the sum is 13.

The square root of 1230520 is about 1109.2880599736. The cubic root of 1230520 is about 107.1592237432.

Adding to 1230520 its reverse (250321), we get a palindrome (1480841).

The spelling of 1230520 in words is "one million, two hundred thirty thousand, five hundred twenty".